examples/ip_fragmentation/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <stdint.h>
   8 #include <inttypes.h>
   9 #include <sys/types.h>
  10 #include <sys/param.h>
  11 #include <string.h>
  12 #include <sys/queue.h>
  13 #include <stdarg.h>
  14 #include <errno.h>
  15 #include <getopt.h>
  16
  17 #include <rte_common.h>
  18 #include <rte_byteorder.h>
  19 #include <rte_log.h>
  20 #include <rte_memory.h>
  21 #include <rte_memcpy.h>
  22 #include <rte_eal.h>
  23 #include <rte_launch.h>
  24 #include <rte_atomic.h>
  25 #include <rte_cycles.h>
  26 #include <rte_prefetch.h>
  27 #include <rte_lcore.h>
  28 #include <rte_per_lcore.h>
  29 #include <rte_branch_prediction.h>
  30 #include <rte_interrupts.h>
  31 #include <rte_random.h>
  32 #include <rte_debug.h>
  33 #include <rte_ether.h>
  34 #include <rte_ethdev.h>
  35 #include <rte_mempool.h>
  36 #include <rte_mbuf.h>
  37 #include <rte_lpm.h>
  38 #include <rte_lpm6.h>
  39 #include <rte_ip.h>
  40 #include <rte_string_fns.h>
  41
  42 #include <rte_ip_frag.h>
  43
  44 #define RTE_LOGTYPE_IP_FRAG RTE_LOGTYPE_USER1
  45
  46 /* allow max jumbo frame 9.5 KB */
  47 #define JUMBO_FRAME_MAX_SIZE    0x2600
  48
  49 #define ROUNDUP_DIV(a, b)       (((a) + (b) - 1) / (b))
  50
  51 /*
  52  * Default byte size for the IPv6 Maximum Transfer Unit (MTU).
  53  * This value includes the size of IPv6 header.
  54  */
  55 #define IPV4_MTU_DEFAULT        RTE_ETHER_MTU
  56 #define IPV6_MTU_DEFAULT        RTE_ETHER_MTU
  57
  58 /*
  59  * The overhead from max frame size to MTU.
  60  * We have to consider the max possible overhead.
  61  */
  62 #define MTU_OVERHEAD    \
  63         (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + \
  64                 2 * sizeof(struct rte_vlan_hdr))
  65
  66 /*
  67  * Default payload in bytes for the IPv6 packet.
  68  */
  69 #define IPV4_DEFAULT_PAYLOAD    (IPV4_MTU_DEFAULT - sizeof(struct rte_ipv4_hdr))
  70 #define IPV6_DEFAULT_PAYLOAD    (IPV6_MTU_DEFAULT - sizeof(struct rte_ipv6_hdr))
  71
  72 /*
  73  * Max number of fragments per packet expected - defined by config file.
  74  */
  75 #define MAX_PACKET_FRAG RTE_LIBRTE_IP_FRAG_MAX_FRAG
  76
  77 #define NB_MBUF   8192
  78
  79 #define MAX_PKT_BURST   32
  80 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  81
  82 /* Configure how many packets ahead to prefetch, when reading packets */
  83 #define PREFETCH_OFFSET 3
  84
  85 /*
  86  * Configurable number of RX/TX ring descriptors
  87  */
  88 #define RTE_TEST_RX_DESC_DEFAULT 1024
  89 #define RTE_TEST_TX_DESC_DEFAULT 1024
  90 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  91 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  92
  93 /* ethernet addresses of ports */
  94 static struct rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
  95
  96 #ifndef IPv4_BYTES
  97 #define IPv4_BYTES_FMT "%" PRIu8 ".%" PRIu8 ".%" PRIu8 ".%" PRIu8
  98 #define IPv4_BYTES(addr) \
  99                 (uint8_t) (((addr) >> 24) & 0xFF),\
 100                 (uint8_t) (((addr) >> 16) & 0xFF),\
 101                 (uint8_t) (((addr) >> 8) & 0xFF),\
 102                 (uint8_t) ((addr) & 0xFF)
 103 #endif
 104
 105 #ifndef IPv6_BYTES
 106 #define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
 107                        "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 108 #define IPv6_BYTES(addr) \
 109         addr[0],  addr[1], addr[2],  addr[3], \
 110         addr[4],  addr[5], addr[6],  addr[7], \
 111         addr[8],  addr[9], addr[10], addr[11],\
 112         addr[12], addr[13],addr[14], addr[15]
 113 #endif
 114
 115 #define IPV6_ADDR_LEN 16
 116
 117 /* mask of enabled ports */
 118 static int enabled_port_mask = 0;
 119
 120 static int rx_queue_per_lcore = 1;
 121
 122 #define MBUF_TABLE_SIZE  (2 * MAX(MAX_PKT_BURST, MAX_PACKET_FRAG))
 123
 124 struct mbuf_table {
 125         uint16_t len;
 126         struct rte_mbuf *m_table[MBUF_TABLE_SIZE];
 127 };
 128
 129 struct rx_queue {
 130         struct rte_mempool *direct_pool;
 131         struct rte_mempool *indirect_pool;
 132         struct rte_lpm *lpm;
 133         struct rte_lpm6 *lpm6;
 134         uint16_t portid;
 135 };
 136
 137 #define MAX_RX_QUEUE_PER_LCORE 16
 138 #define MAX_TX_QUEUE_PER_PORT 16
 139 struct lcore_queue_conf {
 140         uint16_t n_rx_queue;
 141         uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
 142         struct rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
 143         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 144 } __rte_cache_aligned;
 145 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 146
 147 static struct rte_eth_conf port_conf = {
 148         .rxmode = {
 149                 .max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
 150                 .split_hdr_size = 0,
 151                 .offloads = (DEV_RX_OFFLOAD_CHECKSUM |
 152                              DEV_RX_OFFLOAD_SCATTER |
 153                              DEV_RX_OFFLOAD_JUMBO_FRAME),
 154         },
 155         .txmode = {
 156                 .mq_mode = ETH_MQ_TX_NONE,
 157                 .offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
 158                              DEV_TX_OFFLOAD_MULTI_SEGS),
 159         },
 160 };
 161
 162 /*
 163  * IPv4 forwarding table
 164  */
 165 struct l3fwd_ipv4_route {
 166         uint32_t ip;
 167         uint8_t  depth;
 168         uint8_t  if_out;
 169 };
 170
 171 struct l3fwd_ipv4_route l3fwd_ipv4_route_array[] = {
 172                 {RTE_IPV4(100,10,0,0), 16, 0},
 173                 {RTE_IPV4(100,20,0,0), 16, 1},
 174                 {RTE_IPV4(100,30,0,0), 16, 2},
 175                 {RTE_IPV4(100,40,0,0), 16, 3},
 176                 {RTE_IPV4(100,50,0,0), 16, 4},
 177                 {RTE_IPV4(100,60,0,0), 16, 5},
 178                 {RTE_IPV4(100,70,0,0), 16, 6},
 179                 {RTE_IPV4(100,80,0,0), 16, 7},
 180 };
 181
 182 /*
 183  * IPv6 forwarding table
 184  */
 185
 186 struct l3fwd_ipv6_route {
 187         uint8_t ip[IPV6_ADDR_LEN];
 188         uint8_t depth;
 189         uint8_t if_out;
 190 };
 191
 192 static struct l3fwd_ipv6_route l3fwd_ipv6_route_array[] = {
 193         {{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
 194         {{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
 195         {{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
 196         {{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
 197         {{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
 198         {{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
 199         {{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
 200         {{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
 201 };
 202
 203 #define LPM_MAX_RULES         1024
 204 #define LPM6_MAX_RULES         1024
 205 #define LPM6_NUMBER_TBL8S (1 << 16)
 206
 207 struct rte_lpm6_config lpm6_config = {
 208                 .max_rules = LPM6_MAX_RULES,
 209                 .number_tbl8s = LPM6_NUMBER_TBL8S,
 210                 .flags = 0
 211 };
 212
 213 static struct rte_mempool *socket_direct_pool[RTE_MAX_NUMA_NODES];
 214 static struct rte_mempool *socket_indirect_pool[RTE_MAX_NUMA_NODES];
 215 static struct rte_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
 216 static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
 217
 218 /* Send burst of packets on an output interface */
 219 static inline int
 220 send_burst(struct lcore_queue_conf *qconf, uint16_t n, uint16_t port)
 221 {
 222         struct rte_mbuf **m_table;
 223         int ret;
 224         uint16_t queueid;
 225
 226         queueid = qconf->tx_queue_id[port];
 227         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 228
 229         ret = rte_eth_tx_burst(port, queueid, m_table, n);
 230         if (unlikely(ret < n)) {
 231                 do {
 232                         rte_pktmbuf_free(m_table[ret]);
 233                 } while (++ret < n);
 234         }
 235
 236         return 0;
 237 }
 238
 239 static inline void
 240 l3fwd_simple_forward(struct rte_mbuf *m, struct lcore_queue_conf *qconf,
 241                 uint8_t queueid, uint16_t port_in)
 242 {
 243         struct rx_queue *rxq;
 244         uint32_t i, len, next_hop;
 245         uint8_t ipv6;
 246         uint16_t port_out;
 247         int32_t len2;
 248
 249         ipv6 = 0;
 250         rxq = &qconf->rx_queue_list[queueid];
 251
 252         /* by default, send everything back to the source port */
 253         port_out = port_in;
 254
 255         /* Remove the Ethernet header and trailer from the input packet */
 256         rte_pktmbuf_adj(m, (uint16_t)sizeof(struct rte_ether_hdr));
 257
 258         /* Build transmission burst */
 259         len = qconf->tx_mbufs[port_out].len;
 260
 261         /* if this is an IPv4 packet */
 262         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
 263                 struct rte_ipv4_hdr *ip_hdr;
 264                 uint32_t ip_dst;
 265                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 266                 ip_hdr = rte_pktmbuf_mtod(m, struct rte_ipv4_hdr *);
 267                 ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
 268
 269                 /* Find destination port */
 270                 if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
 271                                 (enabled_port_mask & 1 << next_hop) != 0) {
 272                         port_out = next_hop;
 273
 274                         /* Build transmission burst for new port */
 275                         len = qconf->tx_mbufs[port_out].len;
 276                 }
 277
 278                 /* if we don't need to do any fragmentation */
 279                 if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
 280                         qconf->tx_mbufs[port_out].m_table[len] = m;
 281                         len2 = 1;
 282                 } else {
 283                         len2 = rte_ipv4_fragment_packet(m,
 284                                 &qconf->tx_mbufs[port_out].m_table[len],
 285                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 286                                 IPV4_MTU_DEFAULT,
 287                                 rxq->direct_pool, rxq->indirect_pool);
 288
 289                         /* Free input packet */
 290                         rte_pktmbuf_free(m);
 291
 292                         /* If we fail to fragment the packet */
 293                         if (unlikely (len2 < 0))
 294                                 return;
 295                 }
 296         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
 297                 /* if this is an IPv6 packet */
 298                 struct rte_ipv6_hdr *ip_hdr;
 299
 300                 ipv6 = 1;
 301
 302                 /* Read the lookup key (i.e. ip_dst) from the input packet */
 303                 ip_hdr = rte_pktmbuf_mtod(m, struct rte_ipv6_hdr *);
 304
 305                 /* Find destination port */
 306                 if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr,
 307                                                 &next_hop) == 0 &&
 308                                 (enabled_port_mask & 1 << next_hop) != 0) {
 309                         port_out = next_hop;
 310
 311                         /* Build transmission burst for new port */
 312                         len = qconf->tx_mbufs[port_out].len;
 313                 }
 314
 315                 /* if we don't need to do any fragmentation */
 316                 if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
 317                         qconf->tx_mbufs[port_out].m_table[len] = m;
 318                         len2 = 1;
 319                 } else {
 320                         len2 = rte_ipv6_fragment_packet(m,
 321                                 &qconf->tx_mbufs[port_out].m_table[len],
 322                                 (uint16_t)(MBUF_TABLE_SIZE - len),
 323                                 IPV6_MTU_DEFAULT,
 324                                 rxq->direct_pool, rxq->indirect_pool);
 325
 326                         /* Free input packet */
 327                         rte_pktmbuf_free(m);
 328
 329                         /* If we fail to fragment the packet */
 330                         if (unlikely (len2 < 0))
 331                                 return;
 332                 }
 333         }
 334         /* else, just forward the packet */
 335         else {
 336                 qconf->tx_mbufs[port_out].m_table[len] = m;
 337                 len2 = 1;
 338         }
 339
 340         for (i = len; i < len + len2; i ++) {
 341                 void *d_addr_bytes;
 342
 343                 m = qconf->tx_mbufs[port_out].m_table[i];
 344                 struct rte_ether_hdr *eth_hdr = (struct rte_ether_hdr *)
 345                         rte_pktmbuf_prepend(m,
 346                                 (uint16_t)sizeof(struct rte_ether_hdr));
 347                 if (eth_hdr == NULL) {
 348                         rte_panic("No headroom in mbuf.\n");
 349                 }
 350
 351                 m->l2_len = sizeof(struct rte_ether_hdr);
 352
 353                 /* 02:00:00:00:00:xx */
 354                 d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
 355                 *((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)port_out << 40);
 356
 357                 /* src addr */
 358                 rte_ether_addr_copy(&ports_eth_addr[port_out],
 359                                 &eth_hdr->s_addr);
 360                 if (ipv6) {
 361                         eth_hdr->ether_type =
 362                                 rte_be_to_cpu_16(RTE_ETHER_TYPE_IPV6);
 363                 } else {
 364                         eth_hdr->ether_type =
 365                                 rte_be_to_cpu_16(RTE_ETHER_TYPE_IPV4);
 366                         m->ol_flags |= (PKT_TX_IPV4 | PKT_TX_IP_CKSUM);
 367                 }
 368         }
 369
 370         len += len2;
 371
 372         if (likely(len < MAX_PKT_BURST)) {
 373                 qconf->tx_mbufs[port_out].len = (uint16_t)len;
 374                 return;
 375         }
 376
 377         /* Transmit packets */
 378         send_burst(qconf, (uint16_t)len, port_out);
 379         qconf->tx_mbufs[port_out].len = 0;
 380 }
 381
 382 /* main processing loop */
 383 static int
 384 main_loop(__attribute__((unused)) void *dummy)
 385 {
 386         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 387         unsigned lcore_id;
 388         uint64_t prev_tsc, diff_tsc, cur_tsc;
 389         int i, j, nb_rx;
 390         uint16_t portid;
 391         struct lcore_queue_conf *qconf;
 392         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 393
 394         prev_tsc = 0;
 395
 396         lcore_id = rte_lcore_id();
 397         qconf = &lcore_queue_conf[lcore_id];
 398
 399         if (qconf->n_rx_queue == 0) {
 400                 RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
 401                 return 0;
 402         }
 403
 404         RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
 405
 406         for (i = 0; i < qconf->n_rx_queue; i++) {
 407
 408                 portid = qconf->rx_queue_list[i].portid;
 409                 RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
 410                                 portid);
 411         }
 412
 413         while (1) {
 414
 415                 cur_tsc = rte_rdtsc();
 416
 417                 /*
 418                  * TX burst queue drain
 419                  */
 420                 diff_tsc = cur_tsc - prev_tsc;
 421                 if (unlikely(diff_tsc > drain_tsc)) {
 422
 423                         /*
 424                          * This could be optimized (use queueid instead of
 425                          * portid), but it is not called so often
 426                          */
 427                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 428                                 if (qconf->tx_mbufs[portid].len == 0)
 429                                         continue;
 430                                 send_burst(&lcore_queue_conf[lcore_id],
 431                                            qconf->tx_mbufs[portid].len,
 432                                            portid);
 433                                 qconf->tx_mbufs[portid].len = 0;
 434                         }
 435
 436                         prev_tsc = cur_tsc;
 437                 }
 438
 439                 /*
 440                  * Read packet from RX queues
 441                  */
 442                 for (i = 0; i < qconf->n_rx_queue; i++) {
 443
 444                         portid = qconf->rx_queue_list[i].portid;
 445                         nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 446                                                  MAX_PKT_BURST);
 447
 448                         /* Prefetch first packets */
 449                         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
 450                                 rte_prefetch0(rte_pktmbuf_mtod(
 451                                                 pkts_burst[j], void *));
 452                         }
 453
 454                         /* Prefetch and forward already prefetched packets */
 455                         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
 456                                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
 457                                                 j + PREFETCH_OFFSET], void *));
 458                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 459                         }
 460
 461                         /* Forward remaining prefetched packets */
 462                         for (; j < nb_rx; j++) {
 463                                 l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
 464                         }
 465                 }
 466         }
 467 }
 468
 469 /* display usage */
 470 static void
 471 print_usage(const char *prgname)
 472 {
 473         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 474                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 475                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n",
 476                prgname);
 477 }
 478
 479 static int
 480 parse_portmask(const char *portmask)
 481 {
 482         char *end = NULL;
 483         unsigned long pm;
 484
 485         /* parse hexadecimal string */
 486         pm = strtoul(portmask, &end, 16);
 487         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 488                 return -1;
 489
 490         if (pm == 0)
 491                 return -1;
 492
 493         return pm;
 494 }
 495
 496 static int
 497 parse_nqueue(const char *q_arg)
 498 {
 499         char *end = NULL;
 500         unsigned long n;
 501
 502         /* parse hexadecimal string */
 503         n = strtoul(q_arg, &end, 10);
 504         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 505                 return -1;
 506         if (n == 0)
 507                 return -1;
 508         if (n >= MAX_RX_QUEUE_PER_LCORE)
 509                 return -1;
 510
 511         return n;
 512 }
 513
 514 /* Parse the argument given in the command line of the application */
 515 static int
 516 parse_args(int argc, char **argv)
 517 {
 518         int opt, ret;
 519         char **argvopt;
 520         int option_index;
 521         char *prgname = argv[0];
 522         static struct option lgopts[] = {
 523                 {NULL, 0, 0, 0}
 524         };
 525
 526         argvopt = argv;
 527
 528         while ((opt = getopt_long(argc, argvopt, "p:q:",
 529                                   lgopts, &option_index)) != EOF) {
 530
 531                 switch (opt) {
 532                 /* portmask */
 533                 case 'p':
 534                         enabled_port_mask = parse_portmask(optarg);
 535                         if (enabled_port_mask < 0) {
 536                                 printf("invalid portmask\n");
 537                                 print_usage(prgname);
 538                                 return -1;
 539                         }
 540                         break;
 541
 542                 /* nqueue */
 543                 case 'q':
 544                         rx_queue_per_lcore = parse_nqueue(optarg);
 545                         if (rx_queue_per_lcore < 0) {
 546                                 printf("invalid queue number\n");
 547                                 print_usage(prgname);
 548                                 return -1;
 549                         }
 550                         break;
 551
 552                 /* long options */
 553                 case 0:
 554                         print_usage(prgname);
 555                         return -1;
 556
 557                 default:
 558                         print_usage(prgname);
 559                         return -1;
 560                 }
 561         }
 562
 563         if (enabled_port_mask == 0) {
 564                 printf("portmask not specified\n");
 565                 print_usage(prgname);
 566                 return -1;
 567         }
 568
 569         if (optind >= 0)
 570                 argv[optind-1] = prgname;
 571
 572         ret = optind-1;
 573         optind = 1; /* reset getopt lib */
 574         return ret;
 575 }
 576
 577 static void
 578 print_ethaddr(const char *name, struct rte_ether_addr *eth_addr)
 579 {
 580         char buf[RTE_ETHER_ADDR_FMT_SIZE];
 581         rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
 582         printf("%s%s", name, buf);
 583 }
 584
 585 /* Check the link status of all ports in up to 9s, and print them finally */
 586 static void
 587 check_all_ports_link_status(uint32_t port_mask)
 588 {
 589 #define CHECK_INTERVAL 100 /* 100ms */
 590 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 591         uint16_t portid;
 592         uint8_t count, all_ports_up, print_flag = 0;
 593         struct rte_eth_link link;
 594
 595         printf("\nChecking link status");
 596         fflush(stdout);
 597         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 598                 all_ports_up = 1;
 599                 RTE_ETH_FOREACH_DEV(portid) {
 600                         if ((port_mask & (1 << portid)) == 0)
 601                                 continue;
 602                         memset(&link, 0, sizeof(link));
 603                         rte_eth_link_get_nowait(portid, &link);
 604                         /* print link status if flag set */
 605                         if (print_flag == 1) {
 606                                 if (link.link_status)
 607                                         printf(
 608                                         "Port%d Link Up .Speed %u Mbps - %s\n",
 609                                                 portid, link.link_speed,
 610                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 611                                         ("full-duplex") : ("half-duplex\n"));
 612                                 else
 613                                         printf("Port %d Link Down\n", portid);
 614                                 continue;
 615                         }
 616                         /* clear all_ports_up flag if any link down */
 617                         if (link.link_status == ETH_LINK_DOWN) {
 618                                 all_ports_up = 0;
 619                                 break;
 620                         }
 621                 }
 622                 /* after finally printing all link status, get out */
 623                 if (print_flag == 1)
 624                         break;
 625
 626                 if (all_ports_up == 0) {
 627                         printf(".");
 628                         fflush(stdout);
 629                         rte_delay_ms(CHECK_INTERVAL);
 630                 }
 631
 632                 /* set the print_flag if all ports up or timeout */
 633                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 634                         print_flag = 1;
 635                         printf("\ndone\n");
 636                 }
 637         }
 638 }
 639
 640 /* Check L3 packet type detection capablity of the NIC port */
 641 static int
 642 check_ptype(int portid)
 643 {
 644         int i, ret;
 645         int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
 646         uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 647
 648         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
 649         if (ret <= 0)
 650                 return 0;
 651
 652         uint32_t ptypes[ret];
 653
 654         ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
 655         for (i = 0; i < ret; ++i) {
 656                 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
 657                         ptype_l3_ipv4 = 1;
 658                 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
 659                         ptype_l3_ipv6 = 1;
 660         }
 661
 662         if (ptype_l3_ipv4 == 0)
 663                 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 664
 665         if (ptype_l3_ipv6 == 0)
 666                 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
 667
 668         if (ptype_l3_ipv4 && ptype_l3_ipv6)
 669                 return 1;
 670
 671         return 0;
 672
 673 }
 674
 675 /* Parse packet type of a packet by SW */
 676 static inline void
 677 parse_ptype(struct rte_mbuf *m)
 678 {
 679         struct rte_ether_hdr *eth_hdr;
 680         uint32_t packet_type = RTE_PTYPE_UNKNOWN;
 681         uint16_t ether_type;
 682
 683         eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 684         ether_type = eth_hdr->ether_type;
 685         if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4))
 686                 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 687         else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6))
 688                 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 689
 690         m->packet_type = packet_type;
 691 }
 692
 693 /* callback function to detect packet type for a queue of a port */
 694 static uint16_t
 695 cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
 696                    struct rte_mbuf *pkts[], uint16_t nb_pkts,
 697                    uint16_t max_pkts __rte_unused,
 698                    void *user_param __rte_unused)
 699 {
 700         uint16_t i;
 701
 702         for (i = 0; i < nb_pkts; ++i)
 703                 parse_ptype(pkts[i]);
 704
 705         return nb_pkts;
 706 }
 707
 708 static int
 709 init_routing_table(void)
 710 {
 711         struct rte_lpm *lpm;
 712         struct rte_lpm6 *lpm6;
 713         int socket, ret;
 714         unsigned i;
 715
 716         for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 717                 if (socket_lpm[socket]) {
 718                         lpm = socket_lpm[socket];
 719                         /* populate the LPM table */
 720                         for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
 721                                 ret = rte_lpm_add(lpm,
 722                                         l3fwd_ipv4_route_array[i].ip,
 723                                         l3fwd_ipv4_route_array[i].depth,
 724                                         l3fwd_ipv4_route_array[i].if_out);
 725
 726                                 if (ret < 0) {
 727                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 728                                                 "LPM table\n", i);
 729                                         return -1;
 730                                 }
 731
 732                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
 733                                                 "/%d (port %d)\n",
 734                                         socket,
 735                                         IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
 736                                         l3fwd_ipv4_route_array[i].depth,
 737                                         l3fwd_ipv4_route_array[i].if_out);
 738                         }
 739                 }
 740
 741                 if (socket_lpm6[socket]) {
 742                         lpm6 = socket_lpm6[socket];
 743                         /* populate the LPM6 table */
 744                         for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
 745                                 ret = rte_lpm6_add(lpm6,
 746                                         l3fwd_ipv6_route_array[i].ip,
 747                                         l3fwd_ipv6_route_array[i].depth,
 748                                         l3fwd_ipv6_route_array[i].if_out);
 749
 750                                 if (ret < 0) {
 751                                         RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
 752                                                 "LPM6 table\n", i);
 753                                         return -1;
 754                                 }
 755
 756                                 RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
 757                                                 "/%d (port %d)\n",
 758                                         socket,
 759                                         IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
 760                                         l3fwd_ipv6_route_array[i].depth,
 761                                         l3fwd_ipv6_route_array[i].if_out);
 762                         }
 763                 }
 764         }
 765         return 0;
 766 }
 767
 768 static int
 769 init_mem(void)
 770 {
 771         char buf[PATH_MAX];
 772         struct rte_mempool *mp;
 773         struct rte_lpm *lpm;
 774         struct rte_lpm6 *lpm6;
 775         struct rte_lpm_config lpm_config;
 776         int socket;
 777         unsigned lcore_id;
 778
 779         /* traverse through lcores and initialize structures on each socket */
 780
 781         for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 782
 783                 if (rte_lcore_is_enabled(lcore_id) == 0)
 784                         continue;
 785
 786                 socket = rte_lcore_to_socket_id(lcore_id);
 787
 788                 if (socket == SOCKET_ID_ANY)
 789                         socket = 0;
 790
 791                 if (socket_direct_pool[socket] == NULL) {
 792                         RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
 793                                         socket);
 794                         snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
 795
 796                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
 797                                 0, RTE_MBUF_DEFAULT_BUF_SIZE, socket);
 798                         if (mp == NULL) {
 799                                 RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
 800                                 return -1;
 801                         }
 802                         socket_direct_pool[socket] = mp;
 803                 }
 804
 805                 if (socket_indirect_pool[socket] == NULL) {
 806                         RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
 807                                         socket);
 808                         snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
 809
 810                         mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
 811                                 socket);
 812                         if (mp == NULL) {
 813                                 RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
 814                                 return -1;
 815                         }
 816                         socket_indirect_pool[socket] = mp;
 817                 }
 818
 819                 if (socket_lpm[socket] == NULL) {
 820                         RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
 821                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 822
 823                         lpm_config.max_rules = LPM_MAX_RULES;
 824                         lpm_config.number_tbl8s = 256;
 825                         lpm_config.flags = 0;
 826
 827                         lpm = rte_lpm_create(buf, socket, &lpm_config);
 828                         if (lpm == NULL) {
 829                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 830                                 return -1;
 831                         }
 832                         socket_lpm[socket] = lpm;
 833                 }
 834
 835                 if (socket_lpm6[socket] == NULL) {
 836                         RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
 837                         snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
 838
 839                         lpm6 = rte_lpm6_create(buf, socket, &lpm6_config);
 840                         if (lpm6 == NULL) {
 841                                 RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
 842                                 return -1;
 843                         }
 844                         socket_lpm6[socket] = lpm6;
 845                 }
 846         }
 847
 848         return 0;
 849 }
 850
 851 int
 852 main(int argc, char **argv)
 853 {
 854         struct lcore_queue_conf *qconf;
 855         struct rte_eth_dev_info dev_info;
 856         struct rte_eth_txconf *txconf;
 857         struct rx_queue *rxq;
 858         int socket, ret;
 859         uint16_t nb_ports;
 860         uint16_t queueid = 0;
 861         unsigned lcore_id = 0, rx_lcore_id = 0;
 862         uint32_t n_tx_queue, nb_lcores;
 863         uint16_t portid;
 864
 865         /* init EAL */
 866         ret = rte_eal_init(argc, argv);
 867         if (ret < 0)
 868                 rte_exit(EXIT_FAILURE, "rte_eal_init failed");
 869         argc -= ret;
 870         argv += ret;
 871
 872         /* parse application arguments (after the EAL ones) */
 873         ret = parse_args(argc, argv);
 874         if (ret < 0)
 875                 rte_exit(EXIT_FAILURE, "Invalid arguments");
 876
 877         nb_ports = rte_eth_dev_count_avail();
 878         if (nb_ports == 0)
 879                 rte_exit(EXIT_FAILURE, "No ports found!\n");
 880
 881         nb_lcores = rte_lcore_count();
 882
 883         /* initialize structures (mempools, lpm etc.) */
 884         if (init_mem() < 0)
 885                 rte_panic("Cannot initialize memory structures!\n");
 886
 887         /* check if portmask has non-existent ports */
 888         if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
 889                 rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
 890
 891         /* initialize all ports */
 892         RTE_ETH_FOREACH_DEV(portid) {
 893                 struct rte_eth_conf local_port_conf = port_conf;
 894                 struct rte_eth_rxconf rxq_conf;
 895
 896                 /* skip ports that are not enabled */
 897                 if ((enabled_port_mask & (1 << portid)) == 0) {
 898                         printf("Skipping disabled port %d\n", portid);
 899                         continue;
 900                 }
 901
 902                 qconf = &lcore_queue_conf[rx_lcore_id];
 903
 904                 /* limit the frame size to the maximum supported by NIC */
 905                 rte_eth_dev_info_get(portid, &dev_info);
 906                 local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
 907                     dev_info.max_rx_pktlen,
 908                     local_port_conf.rxmode.max_rx_pkt_len);
 909
 910                 /* get the lcore_id for this port */
 911                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 912                        qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
 913
 914                         rx_lcore_id ++;
 915                         if (rx_lcore_id >= RTE_MAX_LCORE)
 916                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 917
 918                         qconf = &lcore_queue_conf[rx_lcore_id];
 919                 }
 920
 921                 socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
 922                 if (socket == SOCKET_ID_ANY)
 923                         socket = 0;
 924
 925                 rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
 926                 rxq->portid = portid;
 927                 rxq->direct_pool = socket_direct_pool[socket];
 928                 rxq->indirect_pool = socket_indirect_pool[socket];
 929                 rxq->lpm = socket_lpm[socket];
 930                 rxq->lpm6 = socket_lpm6[socket];
 931                 qconf->n_rx_queue++;
 932
 933                 /* init port */
 934                 printf("Initializing port %d on lcore %u...", portid,
 935                        rx_lcore_id);
 936                 fflush(stdout);
 937
 938                 n_tx_queue = nb_lcores;
 939                 if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
 940                         n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 941                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 942                         local_port_conf.txmode.offloads |=
 943                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 944                 ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
 945                                             &local_port_conf);
 946                 if (ret < 0) {
 947                         printf("\n");
 948                         rte_exit(EXIT_FAILURE, "Cannot configure device: "
 949                                 "err=%d, port=%d\n",
 950                                 ret, portid);
 951                 }
 952
 953                 /* set the mtu to the maximum received packet size */
 954                 ret = rte_eth_dev_set_mtu(portid,
 955                         local_port_conf.rxmode.max_rx_pkt_len - MTU_OVERHEAD);
 956                 if (ret < 0) {
 957                         printf("\n");
 958                         rte_exit(EXIT_FAILURE, "Set MTU failed: "
 959                                 "err=%d, port=%d\n",
 960                         ret, portid);
 961                 }
 962
 963                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 964                                             &nb_txd);
 965                 if (ret < 0) {
 966                         printf("\n");
 967                         rte_exit(EXIT_FAILURE, "Cannot adjust number of "
 968                                 "descriptors: err=%d, port=%d\n", ret, portid);
 969                 }
 970
 971                 /* init one RX queue */
 972                 rxq_conf = dev_info.default_rxconf;
 973                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 974                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 975                                              socket, &rxq_conf,
 976                                              socket_direct_pool[socket]);
 977                 if (ret < 0) {
 978                         printf("\n");
 979                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
 980                                 "err=%d, port=%d\n",
 981                                 ret, portid);
 982                 }
 983
 984                 rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
 985                 print_ethaddr(" Address:", &ports_eth_addr[portid]);
 986                 printf("\n");
 987
 988                 /* init one TX queue per couple (lcore,port) */
 989                 queueid = 0;
 990                 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 991                         if (rte_lcore_is_enabled(lcore_id) == 0)
 992                                 continue;
 993
 994                         if (queueid >= dev_info.nb_tx_queues)
 995                                 break;
 996
 997                         socket = (int) rte_lcore_to_socket_id(lcore_id);
 998                         printf("txq=%u,%d ", lcore_id, queueid);
 999                         fflush(stdout);
1000
1001                         txconf = &dev_info.default_txconf;
1002                         txconf->offloads = local_port_conf.txmode.offloads;
1003                         ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
1004                                                      socket, txconf);
1005                         if (ret < 0) {
1006                                 printf("\n");
1007                                 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
1008                                         "err=%d, port=%d\n", ret, portid);
1009                         }
1010
1011                         qconf = &lcore_queue_conf[lcore_id];
1012                         qconf->tx_queue_id[portid] = queueid;
1013                         queueid++;
1014                 }
1015
1016                 printf("\n");
1017         }
1018
1019         printf("\n");
1020
1021         /* start ports */
1022         RTE_ETH_FOREACH_DEV(portid) {
1023                 if ((enabled_port_mask & (1 << portid)) == 0) {
1024                         continue;
1025                 }
1026                 /* Start device */
1027                 ret = rte_eth_dev_start(portid);
1028                 if (ret < 0)
1029                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
1030                                 ret, portid);
1031
1032                 rte_eth_promiscuous_enable(portid);
1033
1034                 if (check_ptype(portid) == 0) {
1035                         rte_eth_add_rx_callback(portid, 0, cb_parse_ptype, NULL);
1036                         printf("Add Rx callback function to detect L3 packet type by SW :"
1037                                 " port = %d\n", portid);
1038                 }
1039         }
1040
1041         if (init_routing_table() < 0)
1042                 rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
1043
1044         check_all_ports_link_status(enabled_port_mask);
1045
1046         /* launch per-lcore init on every lcore */
1047         rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1048         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1049                 if (rte_eal_wait_lcore(lcore_id) < 0)
1050                         return -1;
1051         }
1052
1053         return 0;
1054 }